mirror of
https://github.com/systemd/systemd
synced 2024-10-15 04:24:19 +00:00
man: add an additional note about journalctl -u
Fixes #5387. I kept the _SYSTEMD_UNIT= example because it is easy to understand and not very verbose. _SYSTEMD_CGROUP has much longer entries which do not fit well in the narrow man page. Instead, I added an explanation of what -u is translated into.
This commit is contained in:
parent
752ce3967e
commit
b3e4e23e83
|
@ -930,7 +930,8 @@
|
|||
<para>With one match specified, all entries with a field matching
|
||||
the expression are shown:</para>
|
||||
|
||||
<programlisting>journalctl _SYSTEMD_UNIT=avahi-daemon.service</programlisting>
|
||||
<programlisting>journalctl _SYSTEMD_UNIT=avahi-daemon.service
|
||||
journalctl _SYSTEMD_CGROUP=/user.slice/user-42.slice/session-c1.scope</programlisting>
|
||||
|
||||
<para>If two different fields are matched, only entries matching
|
||||
both expressions at the same time are shown:</para>
|
||||
|
@ -950,6 +951,19 @@
|
|||
|
||||
<programlisting>journalctl _SYSTEMD_UNIT=avahi-daemon.service _PID=28097 + _SYSTEMD_UNIT=dbus.service</programlisting>
|
||||
|
||||
<para>To show all fields emited <emphasis>by</emphasis> a unit and <emphasis>about</emphasis>
|
||||
the unit, option <option>-u</option>/<option>--unit=</option> should be used.
|
||||
<command>journalctl -u <replaceable>name</replaceable></command>
|
||||
expands to a complex filter similar to
|
||||
<programlisting>_SYSTEMD_UNIT=<replaceable>name</replaceable>.service
|
||||
+ UNIT=<replaceable>name</replaceable>.service _PID=1
|
||||
+ OBJECT_SYSTEMD_UNIT=<replaceable>name</replaceable>.service _UID=0
|
||||
+ COREDUMP_UNIT=<replaceable>name</replaceable>.service _UID=0 MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1
|
||||
</programlisting>
|
||||
(see <citerefentry><refentrytitle>systemd.journal-fields</refentrytitle><manvolnum>5</manvolnum></citerefentry>
|
||||
for an explanation of those patterns).
|
||||
</para>
|
||||
|
||||
<para>Show all logs generated by the D-Bus executable:</para>
|
||||
|
||||
<programlisting>journalctl /usr/bin/dbus-daemon</programlisting>
|
||||
|
|
Loading…
Reference in a new issue